Nearly forty years ago, Mr. Xu fuguan published his paper “exposition on Li Yishan’s Poem” ‘the brocade harp,’ which seems to offer a discussion of the poem in question, but virtually a major part of it deals with the relationship between Li Shangyin and his father-in-law, Wang Mayouan. Xu claims that the latter was the culprit of the former’s career frustrations. This is different from the common belief that Li’s marriage with one of Wang’s daughters led to the obstruction of Li Shangyin’s career advancement by Linghu Tao, a member of the opposing Niu faction. And he concludes that the Wang Families’ betrayal and stigmatization of Li gave rise to his miseries. This paper manages to make some further clarification of the key figures (Wang Maoyuan, Linghu Tao, Wang Maoyuan’s daughter) and the major events (the factional feud, the timeline prior the and after Li shanying’s marrying Wang’s daughter). Then the conclusion is drawn that in fact Li shares a positive relationship with his father-in-law. There is no such thing as “in-law trouble”. Finally, I come up with a disagreement with as well as a new perspective to Xu’s assembling evidence of the “in-law trouble” by citing the timeline of poems like “nine days,” “untitled,” and “behold crape myrtles upon leaving the home at Chongrang.”